BasicTreeUI.TreeModelHandler

treeNodesChanged

Invoked after a node (or a set of siblings) has changed in some
way. The node(s) have not changed locations in the tree or
altered their children arrays, but other attributes have
changed and may affect presentation. Example: the name of a
file has changed, but it is in the same location in the file
system.

To indicate the root has changed, childIndices and children
will be null.

Use e.getPath()
to get the parent of the changed node(s).
e.getChildIndices()
returns the index(es) of the changed node(s).

treeNodesRemoved

Invoked after nodes have been removed from the tree. Note that
if a subtree is removed from the tree, this method may only be
invoked once for the root of the removed subtree, not once for
each individual set of siblings removed.

Use e.getPath()
to get the former parent of the deleted node(s).
e.getChildIndices()
returns, in ascending order, the index(es)
the node(s) had before being deleted.

treeStructureChanged

Invoked after the tree has drastically changed structure from a
given node down. If the path returned by e.getPath() is of length
one and the first element does not identify the current root node
the first element should become the new root of the tree.

Use e.getPath()
to get the path to the node.
e.getChildIndices()
returns null.